The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 1993
Filed:
May. 24, 1991
Shiroh Gotoh, Yokkaichi, JP;
Mitsubishi Petrochemical Company Limited, Tokyo, JP;
Abstract
A random copolymer of (a) an .alpha.-olefin having 3 to 12 carbon atoms, (b) a non-conjugated diene represented by the following formula (1): ##STR1## wherein R.sup.1 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each independently represent a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, and n is a number of from 2 to 10, and (c) optionally ethylene, which random copolymer comprises 0.1 to 15 mol % of monomer units of said non-conjugated diene, 0 to 4 mol % of monomer units of ethylene, and pendent ethylenical unsaturations, and has a crystallization degree of 20% or more determined by an X-ray diffraction method, a melt index of 0.01 to 200 g/10 minutes, and a modulus of elasticity according to JIS K-7203 of 1,000 to 30,000 kg/cm.sup.2. The random copolymer can be in the crosslinked form through the pendent ethylenical unsaturation and can also be in the form of a blend of the copolymer with a thermoplastic polymer compatible therewith. The crosslinking can be conducted on the blend of the random copolymer with the thermoplastic polymer, and can also be conducted under the conditions that the random copolymer and/or the thermoplastic polymer are/is foamed whereby the crosslinked product is obtained as a foam.